MgslCancelWaitGpio

Prototype
`ULONG MgslCancelWaitGpio( HANDLE hDevice );`
Parameters
`hDevice`	handle to open port
Return Value
`ERROR_SUCCESS (0)`	success
`ERROR_INVALID_HANDLE`	hDevice is invalid

Cancel a pending MgslWaitGpio call. The contents of the GPIO_DESC structure is undefined. Monitor the event object until signaled before calling MgslWaitGpio again.

See also: General Purpose I/O, Asynchronous API Notification

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